JPS6357287B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a seal packaging conveying method and apparatus for smoothly feeding film-wrapped objects.

Recently, when foods such as bread are transported from manufacturers to retailers and then displayed and sold in stores, four-sided sealed packaging has been used to reduce packaging costs and simplify handling.

This four-sided sealed package is packaged using a packaging device as shown in FIG. In the figure, 1 is a band-shaped packaging film, and this film 1 is fed out by feed rollers 3 and 4 from material rolls 2 set on top and bottom, respectively, and an upper sealer 5 and a lower sealer 6 come into contact with each other. As a result, the leading end 1A of the film is top-sealed 7. The upper and lower sealers 5 and 6 move upward and downward relative to each other as shown by the arrows, and repeatedly approach and move away from each other. FIG. 1 shows a state in which these sealers 5 and 6 are in contact, and at this time, the film 1 is sealed in the transverse direction.

After the leading end 1A of the film is top-sealed 7, the sealers 5 and 6 are separated from each other, so that the packaged object 8 can be transferred by the supply conveyor 9 and forced into the film 1. Subsequently, the film 1 containing the object to be packaged 8 is advanced in the direction of the arrow by a carry-out conveyor 10 and side conveyors 11 and 12 which feed the film 1 while being held by both side edges 1B and 1C of the film. During this process, the side sealers 13 and 14 are applied to both side edges 1B of the film,
1C is side sealed 15 and 16. When the sealers 5 and 6 come into contact with the rear end 1D of the film,
The top seal 7 and end seal 17 of the next film 1 are performed, and since the upper sealer 5 has a built-in heat cutter 18, the film 1 is cut 19. Thus, as shown in FIG. 2, a four-sided sealed packaging bag 20 is obtained in which the front and rear sides 1A and 1D and the left and right sides 1B and 1C of the film 1 are sealed 7, 15, 16 and 17.

Conventionally, as shown in FIG.
For larger objects, the object to be packaged 8 transferred on the supply conveyor 9 can be transferred to the carry-out conveyor 10 without any problem, but for objects whose length L is small, it is difficult to transfer the object to the carry-out conveyor 10 for packaging. There were some things I couldn't do. For this reason, the object to be packaged 8 is forced into the film 1 using the pusher 21. However, if the packaged object is highly rigid, it will not matter, but if the packaged object 8 is forcibly pushed in by the external force of the pusher 21,
When fragile items such as foods are damaged, their commercial value decreases and they cannot be used in practice.

The present invention is directed to a seal packaging conveyance method and a seal packaging conveyance method, in which even fragile and relatively small items such as foodstuffs can be smoothly transferred from a packaged object 8 on a supply conveyor to a discharge conveyor 10. It provides equipment.

In the conveying method of the present invention, an unloading conveyor 23 conveys the packaged object 8 contained in the packaging film 1 in synchronization with the upper and lower sealers 5 and 6 repeatedly approaching and separating from each other. The moving belt roller 24 repeatedly moves toward and away from the supply conveyor 9, and when the upper and lower sealers 5 and 6 are separated, the moving belt roller 24 moves into the space between the sealers 5 and 6, and this The moving belt roller approaches the supply conveyor 9, so that even a small packaged object 8 can be reliably conveyed.

An embodiment of the conveying method of the present invention will be described based on the drawings. FIG. It shows the process of sealing 1A. FIG. 5b shows a process in which the upper and lower sealers 5 and 6 are separated from each other vertically. Fifth
FIG. The process of moving to the vicinity of the supply conveyor 9 is shown. Figures 5d and 5e show a conveyor 9 in which a packaged object 8 is placed inside a packaging film 1 whose tip end is sealed.
FIG. 5F shows a step in which the movable belt roller 24 moves to transport the packaging film 1 containing the object to be wrapped.

FIG. 4 shows a state in which the upper and lower sealers 5 and 6 are in contact with each other to seal the film 1 and cut it with the cutter 18, and shows the same process as in FIG. 5a. By repeating the steps described above, it is possible to reliably transport four-sided sealed packages continuously.

An embodiment of the conveying device of the present invention will be described with reference to FIGS. 6 to 8. The upper sealer 5 is fixed to a holder 31. As shown in FIG. A bearing 33 is attached to one end of this holder 31 to freely slide up and down a fixed post 32, and a roller holder 36 that holds rollers 35 that sandwich both sides of the column 34 is attached to the other end. It is being Also,
A ring bracket 38 is fixed to the holder 31 for holding an upper sealer link 37 that moves the holder 31 up and down.

The lower sealer 6 is also fixed to a holder 41 in the same way as the upper sealer 5, and at one end of this holder 41 there is a bearing 43 that slides the post 32, and at the other end there is a roller holder that holds a roller 45 that sandwiches the column 34. 46 is attached. Furthermore, a link holder 48 that holds a lower sealer link 47 for moving this holder 41 up and down is fixed.

51 is a sealer operating shaft, and a crank lever 52 and a sprocket 53 are fixed to this shaft 51. Upper and lower sealer links 37, 47 are attached to the crank lever 52.

55 is a belt roller operating shaft;
A link drive lever 56 and a sprocket 57 are fixed to the link drive lever 56, and a link 58 is fixed to the link drive lever 56.
Further, a link 58 and a link 59 are connected by a link pin 60, and a belt roller holder 27 is attached to the other end of the link 59. Since a chain 61 is placed between the sprockets 53 and 57, the sealer operating shaft 51 and the belt roller operating shaft 55 operate synchronously via the sprockets 53 and 57 and the chain 61.

Describing the operation of the apparatus of the present invention, FIG. 6 shows that the leading end 1A of the film is top-sealed 7 with sealers 5 and 6, and from this the object to be packaged 8 is transferred by the supply conveyor 9 while pushing the leading end 1A of the film. This shows a state where the vehicle is about to be transferred to the carry-out conveyor 23. (Fig. 5c). At this time, the upper sealer 5 and the lower sealer 6 are vertically separated by the action of the upper sealer link 37 and the lower sealer link 47, respectively. Unloading conveyor 23
The holder 27 holding the moving belt rollers 24 and 25 is connected to the sealer 5 by links 58 and 59.
6 exists at the space seal position. Therefore, since the supply conveyor 9 and the discharge conveyor 23 are very close to each other, the objects to be packaged 8 can be smoothly transferred from the supply conveyor 9 to the discharge conveyor 23.

Next, when a predetermined number of packaged objects 8 have been supplied,
When the sealer operating shaft 51 moves and the crank lever 52 swings, the upper sealer link 3
7 is the lower sealer link 4 from the (a) position to the (b) position.
7 moves from the (c) position to the (d) position, and the upper and lower sealers 5 and 6 come into contact and seal the film 1 (4th
figure). At this time, the sprocket 53 fixed to the sealer operating shaft 51 also swings, so the sprocket 57 also swings via the chain 61, and the belt roller operating shaft 55 works to move the link drive lever 5.
6 is displaced and moves from the (E) position to the (F) position, and the movable belt roller 24 attached to the belt roller holder 27 is moved by the links 58 and 59 to the sealers 5 and 6.
To ensure that the film is sealed properly when the film is removed from the sealing position. 28 is a tension adjustment roller for the belt 26, which is used to keep the tension of the belt 26 constant as the movable belt rollers 24 and 25 move. Sealers 5 and 6 and moving belt roller 2
4 and 25 are connected by a single transmission mechanism as described above, so there is no risk of malfunction.

The present invention is a conveyance device for objects to be packaged in seal packaging as described above, and the conventional seal packaging device has a sealer in the center and a supply conveyor and a discharge conveyor provided before and after the sealer in a central area that is physically close to each other as much as possible. However, due to dimensional restrictions,
Although it was not possible to package small items using sticker packaging,
In the device of the present invention, when the upper and lower sealers are open, the movable belt roller of the delivery conveyor can be moved to the sealing position, and the distance between the conveyor and the supply conveyor can be shortened. This also contributes to improving the operating rate of packaging equipment, since packaging can now be performed and the objects to be packaged can be transported reliably.

[Brief explanation of the drawing]

Fig. 1 is a front view showing the outline of the four-side seal packaging device, Fig. 2 is a plan view of the four-side seal packaging bag, Fig. 3 is a front view showing the state in which the objects to be packaged are transferred from the supply conveyor to the discharge conveyor, and Fig. 4 is a front view showing the outline of the four-side seal packaging device. The figure shows the conveying method of the present invention, and is a front view showing a state in which the sealer is in contact with the film to seal it. Figures 5a to 5f are front views showing the steps of the conveying method, and Figure 6. 7 is a front view showing the apparatus of the present invention, FIG. 7 is a side view thereof, and FIG. 8 is a plan view thereof. In the drawing, 1 is a packaging film, 5 is an upper sealer, 6 is a lower sealer, 8 is an object to be packaged, 9 is a supply conveyor, 20 is a four-sided seal packaging bag, 23 is a delivery conveyor, and 24 and 25 are moving belt rollers. ,2
7 is a belt roller holder, 31 is an upper sealer holder, 37 is an upper sealer link, 41 is a lower sealer holder, 47 is a lower sealer link, 51 is a sealer operating shaft, 52 is a crank lever, 55 is a belt roller operating shaft, 56 is a link drive lever, 5
8 and 59 are links, and 61 is a chain.

Claims (1)

[Claims] 1. A step of bringing upper and lower sealers into contact with each other in order to cut the packaging film and sealing the leading end, a step of separating the upper and lower sealers vertically from each other, and a moving belt passing between the separated sealers. The process of bringing the belt of the carry-out conveyor close to the supply conveyor of the packaged objects by extending the rollers, and the process of transporting the packaged bodies to the carry-out conveyor while feeding them from the supply conveyor into a packaging film whose tip is sealed. , a process of separating the belt of the delivery conveyor from the supply conveyor by retracting the movable belt roller between the separated upper and lower sealers; and a process of cutting the packaging film containing the objects to be packaged and sealing the rear end. A method for transporting sealed packages, comprising the steps of bringing upper and lower sealers into contact with each other, and discharging the packaged objects using a discharge conveyor. 2. A supply conveyor for supplying the objects to be packaged;
A discharge conveyor for discharging the packaged objects, upper and lower sealers provided between the two to seal the packaging film from above and below, and one end of the discharge conveyor having a tension adjustment roller to keep the tension of the belt constant. A movable belt roller is provided that can freely advance and retract through the sealers while maintaining the same, and the vertical movement in which the sealers move away from each other and come into contact with each other corresponds to the horizontal movement in which the movable belt roller advances and retracts, respectively. A seal packaging conveyance device characterized by comprising a link mechanism interlocking through the rotation of a link and a lever.